Io

Supported platforms:
Available since: Gideros 2011.6

Description

Manages main input/output operations.

Examples

Create a file with default values

local hex1
local hex2
local hex3
local file = io.open("|D|theme.txt", "r")
if not file then
	hex1 = 0x280d1d
	hex2 = 0x581422
	hex3 = 0x622334
	file = io.open("|D|theme.txt", "w+")
	file:write(hex1.."\n")
	file:write(hex2.."\n")
	file:write(hex3.."\n")
	file:close()
else
	hex1 = file:read("*line")
	hex2 = file:read("*line")
	hex3 = file:read("*line")
	file:close()
end
print(hex1, hex2, hex3)

To copy a file

local function copy(src, dst)
	local srcf = io.open(src, "rb")
	local dstf = io.open(dst, "wb")
	local size = 2^13 -- good buffer size (8K)
	while true do
		local block = srcf:read(size)
		if not block then break end
		dstf:write(block)
	end
	srcf:close()
	dstf:close()
end

Methods io.close closes file, or the default output file io.flush flushes the default output file io.input opens file in text mode, sets as default input file, or returns current default input file io.lines opens file in read mode, returns iterator function to return lines, nil ends io.open opens file in specified mode "[rawb]", returns handle or nil io.output opens file in text mode, sets as default output file, or returns current default output file io.read reads file according to given formats, returns read values or nil io.tmpfile returns a handle for a temporary file, opened in update mode io.type returns "file" if obj is an open file handle, "close file" if closed, or nil if not a file handle io.write writes strings or numbers to file

Events Constants

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